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This review explores the impact of vitamin D deficiency on the skin from a dermatological perspective, but reports no new clinical results.

This review summarizes the current understanding of Wnt signaling in relation to its roles in tissue regeneration and cancer progression and discusses recent medical advancements targeting this pathway for therapeutic purposes.

This review highlights various methods of stem cell communication that reflect the unique organization and function of different tissues and reports no new results.

This study found that thyrotropin-releasing hormone (TRH) acts as a potent stimulator of hair growth in human scalp hair follicles, promoting elongation and prolonging the anagen phase.

This review discusses the role of lamins in development, tissue maintenance, and stress response, and does not report new experimental findings.

This study found that a cocktail of three proteins from embryonic skin can enable adult fibroblasts to regenerate hair follicles by altering gene expression and activating regenerative signaling pathways.

This review discusses the paracrine properties of cardiac stem cells and pericytes in regenerative medicine for ischaemic diseases and reports no new clinical results.

This study reported that a single local subcutaneous infusion of mesenchymal stromal cells from the human umbilical cord promoted wound healing, improved blood circulation, and reduced wound size in patients with chronic wounds without significant adverse effects over one year.

This review presents the practice of using hair bioelement analysis to assess nutritional status or environmental exposure, proposing complex interactions and hypotheses regarding depression and autism but reports no new clinical results.

This study suggests that adult hair follicle stem cells can survive and potentially differentiate into neuronal cells after being transplanted in a mouse model of traumatic brain injury, indicating promise for TBI therapy.

Different stem cells have benefits and challenges for tissue repair, and more research is needed to find the best types for each use.

This review discusses various stem cell types, methods of obtaining them, their applications, and the potential use of exosomes, but reports no new clinical results.

In this case report, a 25-year-old man with nevus comedonicus showed no improvement from keratolytics and topical tretinoin, but had success with surgical excision of the lesions.

This study observed that exosomes derived from adipose-derived stem cells significantly enhanced bone marrow mesenchymal stem cell migration and osteogenesis, leading to improved bone regeneration in a rat model of calvarial defects.

This randomized control trial reported that mesenchymal stem cell-derived exosomes significantly increased hair density and thickness in patients with androgenic alopecia, with a mean increase of 35 hairs/cm² over 12 weeks compared to the placebo group, which showed minimal hair density changes.

The document concludes that permanent hair loss conditions are complex, require early specific treatments, and "secondary permanent alopecias" might be a more accurate term than "secondary cicatricial alopecia."

This study found that neural crest-derived hair follicle cells in mice can differentiate into osteoblast-like cells, suggesting a potential application for bone regenerative therapies.

This review examines how mesenchymal stem cells and their derivatives may enhance skin regeneration and rejuvenation, but it reports no new clinical results; the authors suggest iPSC-derived MSCs hold promise for future therapies.

This review discusses the structure and regenerative potential of hair follicles, highlighting their role in wound healing, stem cell populations, and keratin-based biomaterials, but it reports no new clinical results.

This study explores ear pinna development in mice and reports that elastic cartilage formation is disrupted in a short ear mutant, correlating with increased adult adipocytes and impaired chondrogenesis.

This study found that hair follicles in mice and humans can convert wound-related myofibroblasts into adipocytes, suggesting a potential pathway to reduce scar formation by activating BMP signaling.

This article reviews the design and objectives of the Rotterdam Study, as well as summarizes major findings, without reporting new results.

This study found that induced expression of mir-302 can reprogram human hair follicle cells into induced pluripotent stem cells through a novel epigenetic mechanism involving global demethylation.

Ets2 gene is crucial for placental development in mice.

This review explores fibroblast heterogeneity in the mammalian dermis and suggests potential therapeutic applications by targeting fibroblast subtypes, but reports no new experimental results.

This review discusses the role of TGF-β signaling in stem cell recruitment and tissue regeneration, indicating that abnormalities in TGF-β activation contribute to various major diseases and suggesting avenues for therapeutic intervention.

This review summarizes the roles of bone morphogenetic proteins in the development and regulation of normal and diseased skin, but it does not provide new clinical results.

Androgens can cause hair growth in some areas and hair loss on the scalp.

This review explores the role of TGF-β superfamily pathways in stem cell environments and their implications for tissue regeneration and cancer development, reporting no new experimental results.

Male hormones affect COVID-19 severity and certain drugs targeting these hormones could help reduce the risk.